Metal sash



P. J. HEALEY.

METAL SASH.

APPLICATION FILED APR. 15, 1920.

1,387,542. Patented Aug. 16, 1921. I M

*g .11 14 3 1% L 1 1 i PATENT OFFICE.

PATRICK J. KELLEY, OF JERSEY CITY, NEW JERSEY.

urn. SASH. I

Speciflcationof Letters Patent.

Patented Aug. 16, 1921.

Application filed April 15, 1920. Serial No. 374,183.

To all whom it may concern:

Be it known that I, PATRICK J. HEALEY, a citizen of the United States,and a resident of Jersey City, in the county of Hudson and State of NewJersey, have made and 1nvented certain new and useful Improvements inMetal Sashes, of which the follow in is a specification.

if invention relates to metal sash, for winc ow frames, door frames,partitions and for other uses for which the same may be ap licable.

etal sashes are usually constructed w1th vertical and horizontal bars,which are substantially T-shaped in cross section as the same isparticularly adapted for this use, due first to its inherent rigidnessand strength, both with regard to shearing forces and bending moments,and second, due to the pocket formed between the confronting flanges andwebs of adjacent horizontal and vertical bars and into whlch the glasspanes are placed and held. In the yarious metal sashes, with which I amfamlliar, the joint between the horizontal and vertical bars isaccomplished by cutting away or notching both the web and flange of oneof the bars. This notching or cutting away of the flanges of the crossbars tends to materially weaken the sash, part cularly with regard toits resistance to bending moments, such as are caused by snow or highwind pressures, and in fact this weakening has in some instances beenthe direct cause of failure of a sash. In other instances, while thenotching of the flange has not been sufficient to cause the failure ofthe sash, yet it has embodied within the sash, an altogether undesirabledegree of flexibility, due to the weakening of the bars with respect tobending.

It is accordingly an object of my invention to provide a metal sash orframe joint wherein the original strength of the bars with regard toresistance to bending moments is preserved and the metal which is cutaway for the protrusion of one bar through the other lies entirelywithin the web of the bar and is located approximately central withrespect to the neutral axis thereof.

A further object is to accomplish the aforementioned ends in a simpleand expeditious manner and to provide a sash, which when assembled willhave a high resistance to bending and sufficient resistance with respectto shearing forces. Further, to provide a sash which may be economicallymanufactured and with the crossing bars so formed as to be rigidlylocked against all relative movement.

W1th the foregoing and other objects in view, which will appear as thedescription proceeds, my invention resides in the novel metal sashillustrated in the accompanying drawings and described in the presentspecification, and in the novel combination and arrangement of parts andin the details of construction as hereinafter described and clalmed,wherein it is to be understood that changes may be made within the scopeof what is claimed without departing from the spirit of the invention.

The preferred embodiment of my invention is disclosed in theaccompanying drawings, wherein Figure l is a view in plan of a portionof a window embodying the novel features of my invention;

Fig. 2 is a view in top plan of the frame oin 3 is a bottom plan view ofthe same;

Flg. 4 is a view in transverse section taken on the line H of Fig. 2;

Fig. 5 is a view in transverse section taken on the line 5-5 of Fig. 2;

Fig. 6 is a view in transverse section taken on the line 6-6 of Fig. 4;

Fig. 7 is a view in side elevation of one of the crossing bars; and

Fig. 8 is a fragmental View in perspective of a bar, illustrating themanner in which the web is cut away to receive the web and flange of thecross bar therethrough and also illustrating the cutting and bending ofthe rib with which the second cross bar is provided.

Referring specifically to the several views, wherein corresponding partsare designated by similar reference numerals throu hout, t e metal sashis composed of a num er of crossin bars A and B. Each bar A ispreferably formed with a web 10, and flange 11, the latter beingprovided along its side edges with the inwardly projecting ribs 12. Theweb 10 is provided with a T-shaped slot 13 therein, the head of whichlies along the inner surface of the flan e 11. The ribs 12 adjacent theT-shaped s ot of the web are provided with the outwardly and downwardlybent wings 14, formed by slitting or cutting the ribs 12 and bending thefree intermediate ortions into the general plane of the flange 1, thedistance between the shts being equal-to the width of the flange of thecross bar B as hereinafter descrlbed.

The cross bar B is in turn, preferably formed with a web 15, and flange16, the former being provided at its lower edge with a restricted notch17, equal in width to the thickness of the web 10 of the cross Y crossbar B, thus securely locking the bars in their registered position andholding them rigidly against movement in any direction.

The center of area of the T-slots 13 lies al roximately on the neutralaxis of the ar A, so that the slotting of the bars A, necessary for theprotruding of one bar through the other will have a minimum effect uponthe strength of the cross bars with respect to resistance to bendingmoments.

From the'foregoing it will be observed that a strong and rigid frame ormetal sash is obtained, the bars being securely locked again-stlongitudinal or transverse shifting and securely held againstdistortion. F urther, the slots lying entirely within the web of thecross bar prevents undue weakening or. undue flexibleness of the frameor sash.

Having thus described my invention, what I claim is:-

1. A metal sash comprising crossing bars, each formed with a web and aflange, one of said bars having ribs lying along the edges thereof andwith a slot lying wholly within the web of said bar and adapted toreceive the other cross bar therethrough, the ribs of said bar adjacentsaid slot notched and bent outward to form tongues lying in the generalplane of the flange, the second cross bar provided with a notch in thefree edge of its web and adapted to engage the web at the lowerextremity of the slot of the first mentioned bar, and the flange of thesecond mentioned bar adapted to seat within the notches formed by thetongues of the first mentioned bar.

2. A metal sash comprisingcrossing bars, formed with a web and a flange,the joint between the bars characterized by one bar be ng provided witha slot lying wholly within its web, with the head portion of the slotextending along the inner surface of the flange of the first mentionedbar, and provided with notches adjacent the aforementioned slotand thesecond bar provided with a notch at the free edge of its web and adaptedto receive the web of the first mentioned bar therein, the secondmentioned bar extending through the slot in the first mentioned bar withthe flange thereof lying within the notches of said ribs and heldagainst movement thereby.-

3. metal sash or frame formed of substantially T-shaped bars, havingjoints between the crossing bars, characterized by providing asubstantially T-shaped slot in the web of one bar with the center ofarea thereof lying approximately on the neutral axis of the bar and withthehead of the slot extending along the inner surface of the flange ofthe bar, ribs extending along the flange of the first mentioned bar andprovided with notches adjacent the aforementioned slot with theresulting tongues bent into the general plane of the flange, and thesecond bar extending through the said slot and held against movement bythe side walls of the notches in the rib andprovided at the free edge ofits web with a notch receiving the web adjacent the slot of the firstmentioned bar therein and the said tongues bent into engagement with thetop of the second mentioned bar.

Signed at' New York, borough of Manhattan, 1n the county .of New Yorkand State of New York, thisQnd day of April, A. D.- 1920.

PATRICK J. HEALEY. Witnesses:

WM. H. GEE, I. MANonLBLooM.

